As one of the essential basic materials in industry, wire and cable are widely used. So what is the relationship between cables and wires? In fact, strictly speaking, cables and wires have differences in size, structure, function and characteristics. Let's find out.

What are wires and cables?

Wires and cables are generally composed of three parts: wire and cable conductor, insulation layer and sheath layer.

Wires generally refer to conductive metal wires used to carry current. They come in a variety of forms, such as solid, stranded or foil woven. According to the insulation condition, the wire can be divided into bare wire and insulated wire two categories.

The cable is generally an insulated wire composed of one or more mutually insulated conductive wire cores placed in a sealed sheath, and a protective covering layer can be added outside. Cables include power cables, control cables, compensation cables, shielding cables, high temperature cables, computer cables, signal cables, coaxial cables, fire-resistant cables, Marine cables, etc.

The main difference between wire and cable?

1, the structure is different: the wire is composed of one or several soft wires, and the outer bread is a light soft insulation layer; A cable consists of one or more insulated conductors wrapped in a tough outer layer of metal or rubber.

2, the size is different: small wire size, simple structure; The cable size is large and the structure is complex.

3, the function is different: the wire can transmit information and electrical energy, according to its characteristics can be used as a low-voltage wire for automotive, automotive high-voltage ignition wire, motor electrical wiring, aviation wire, compensation wire, etc., which bare wire can also be used as a manufacturing motor, electrical components and connecting wires; Cables are mainly used to transmit, distribute electrical energy or transmit electrical signals, including power cables, communication cables and control cables.

4, different characteristics: low wire hardness, high cable hardness. Due to the limited area of the wire, it can only transmit small power; And the cable can transmit relatively large power current due to its strong bearing capacity...

Usually, we call the small diameter "line" and the large diameter "cable"; The simple structure is called "line", and the complex structure is called "cable". However, with the expansion of the scope of use, many varieties of "cable in the line", "cable in the cable", so "wire" and "cable" there is no strict boundary, we will be unified wire and cable called wire and cable.

We all know that there are many types of wire and cable, such as: power cables, control cables, low-smoke halogen-free cables, insulated wires, heat-resistant wires and so on. Different wire and cable are adapted to different environments and uses, so what aspects do we need to consider when choosing?

1. Type selection

When choosing wire and cable, it is necessary to consider the use, laying conditions and safety. According to the different uses, power cables, overhead insulated cables, control cables, etc. According to the different laying conditions, general plastic insulated wire, steel tape armored cable, steel wire armored cable, anti-corrosion cable can be selected; According to the safety requirements, flame retardant cables, low smoke halogen-free cables, fire resistant cables can be selected.

2, specification selection

When determining the use specifications of wire and cable (conductor cross section), heat, voltage loss, economic current density, mechanical strength and other conditions should be considered. According to experience, due to its large load current, the low-voltage power line generally selects the section according to the heating condition first, and then checks its voltage loss and mechanical strength; Low voltage lighting line because of its high voltage level requirements, can first select the section according to the allowable voltage loss conditions, and then check the heating conditions and mechanical strength; For high voltage lines, the section is selected first according to the economic current density, and then the heating condition and allowable voltage loss are checked.

After we have determined the specifications and models of the wire and cable, there is another point that cannot be ignored. That's the quality of the wire and cable. The quality of wire and cable directly affects the normal operation of the circuit. So when we choose, we should pay attention.

Qingdao Tianxing Cable Co., Ltd. focuses on the production of customized wire and cable manufacturers, main: fire wire and cable, power cable, control cable and other products, exported to more than 40 countries and regions around the world, the annual production capacity of 1 billion yuan. 6000 square meters of storage, standing hundreds of millions of inventory, order demand for rapid distribution and delivery, large prices more favorable. Hotline: 16678668098